Weems Creek Bridge (Anne Arundel County, Maryland)
Built 1997
Swing bridge over Weems Creek on MD 436 in Annapolis
Open to traffic

West End Bridge (Allegheny County, Pennsylvania)
Built 1930; rehabilitated 1991
Steel through arch bridge over Ohio River on US 19 in Pittsburgh
Open to traffic

West Fork Pigeon River Bridge (Haywood County, North Carolina)
Built 1891
Through truss bridge over West Fork Pigeon River on NC 1112
Open to traffic

West Harmony Road Bridge No. 1 (Sebastian County, Arkansas)
Built 1940 by the Works Progress Administration
Concrete slab bridge over an unnamed ditch on West Harmony Road (CR 4)
Open to traffic

West Kill Bridge (Greene County, New York)
Built 1928; rehabilitated 1987
Pony truss bridge over West Kill on NY 42
Open to traffic

West Kill Creek Bridge (Greene County, New York)
Built 1928; rehabilitated 1987
Pony truss bridge over West Kill Creek on NY 42
Open to traffic

West Washngton Street Bridge (Onondaga County, New York)
Built 1880
Stone arch bridge over Onondaga Creek on West Washngton Street in Syracuse
Open to traffic

Whippany River Bridge (Morris County, New Jersey)
Built 1891; rehabilitated 1922
Stone arch bridge over Whippany River on US 202 in Morristown
Open to traffic

White River Bridge (Windsor County, Vermont)
Built 1929
Through truss bridge over White River on TR 4/FAS 166 in Hartford
Open to traffic

Willamette River Bridge (Benton County, Oregon)
Built 1926; rehabilitated 1971
Through truss bridge over Willamette River on Eastbound US 20 in Albany
Open to traffic

Williamsburg Bridge (Kings County, New York)
Opened to traffic December 19, 1903
Suspension bridge over East River on Delancey Street in New York
Open to traffic

Willis Avenue Bridge (New York County, New York)
Built 1901; rehabilitated 1987
Swing bridge over Harlem River on Willis Avenue in New York
Open to traffic

Winter Street Bridge (Middlesex County, Massachusetts)
Built 1870
Stone arch bridge over Sudbury River on Winter Street in Framingham
Open to traffic

Wishkah River Bridge (Grays Harbor County, Washington)
Built 1925; rehabilitated 2003
Bascule bridge over Wishkah River on US 12 in Aberdeen
Open to traffic

Woodbridge Drive Bridge (Lewis and Clark County, Montana)
Built 1975
Wooden arch bridge over Sep Gully on Woodbridge Drive in Helena
Open to traffic

York Blvd. over the Arroyo Seco (Los Angeles County, California)
Wooden Trolley Bridge 1890, Concrete Arch Built 1912
Concrete arch bridge over I-110 on York Blvd. in Los Angeles
Open to traffic

Youngs Bay Bridge (Clatsop County, Oregon)
Built 1921
Bascule bridge over Youngs Bay on HWY 105
Open to traffic